刚刚遇到 JFreeChart 并正在为我的项目尝试它...根据解析的选项，我创建了一个名为“CountryVsCountryChart”的类，我想用它来创建一个新图表。我想知道的是如何在我的主界面中将此类的对象添加到 JPanel？我希望能够通过在 JComboBox 中选择一个选项来做到这一点，但我想我能够处理这个......
下面是类的代码（减去适当的导入语句）：
public class CountryVsCountryChart extends JPanel
{
private static final long serialVersionUID = 1L;
private ArrayList<Player> players;
private StatUtilities stats;
public CountryVsCountryChart(String applicationTitle, String chartTitle, ArrayList<Player> players, int option) {
//super(applicationTitle);
this.players = players;
stats = new StatUtilities();
// This will create the dataset
PieDataset dataset = createDataset(option);
// based on the dataset we create the chart
JFreeChart chart = createChart(dataset, chartTitle);
// we put the chart into a panel
ChartPanel chartPanel = new ChartPanel(chart);
// default size
chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
}
/** * Creates a sample dataset */
private PieDataset createDataset(int graphDisplayOption) {
ArrayList<String> countries = new ArrayList<String>();
for (Player p : players) {
countries.add(p.getCountryName());
}
//Get unique country names
Set<String> countryNames = new HashSet<String>(countries);
DefaultPieDataset result = new DefaultPieDataset();
/*
* The below code block uses a switch statement to determine
* which type of stats to display in the graph (country by country).
*
* Options for the switch statement are as follows:
*
* 1 = Average Balls Bowled
* 2 = Average of Bowling Averages
* 3 = Average Career Lengths
* 4 = Average Economy Rates
* 5 = Average Number of 5 Wicket Innings
* 6 = Average Innings Played
* 7 = Average Matches Played
* 8 = Average Runs Conceded
* 9 = Average Strike Rates
* 10 = Average WicketsTaken
*/
for(String c: countryNames)
{
switch(graphDisplayOption)
{
case 1:
result.setValue(c, stats.aveBallsBowled(players, c));
break;
case 2:
result.setValue(c, stats.aveBowlingAverage(players, c));
break;
case 3:
result.setValue(c, stats.aveCareerLength(players, c));
break;
case 4:
result.setValue(c, stats.aveEconRate(players, c));
break;
case 5:
result.setValue(c, stats.aveFiveWicketsInns(players, c));
break;
case 6:
result.setValue(c, stats.aveInningsPerCountry(players, c));
break;
case 7:
result.setValue(c, stats.aveMatchesPerPlayer(players, c));
break;
case 8:
result.setValue(c, stats.aveRunsConceded(players, c));
break;
case 9:
result.setValue(c, stats.aveStrikeRate(players, c));
break;
case 10:
result.setValue(c, stats.aveWickets(players, c));
break;
}
}
return result;
}
/** * Creates a chart */
private JFreeChart createChart(PieDataset dataset, String title) {
JFreeChart chart = ChartFactory.createPieChart3D(
title, // chart title
dataset, // data
true, // include legend
true,
false
);
PiePlot3D plot = (PiePlot3D) chart.getPlot();
plot.setStartAngle(290);
plot.setDirection(Rotation.CLOCKWISE);
plot.setForegroundAlpha(0.5f);
return chart;
}
}
下一段代码用于按钮侦听器 - 对于我单击以在 jpanel 中显示图表的按钮。目前它只有两行代码用于测试目的。代码在我的名为“AppInterface”的主界面类中：
private void comparePlayerStatsBtnActionPerformed(java.awt.event.ActionEvent evt) {
/*
* Include below information in a loop to generate chart, based on option selected.
*/
CountryVsCountryChart chart = new CountryVsCountryChart("Test Chart", "A Test Chart", players, 1);
/**/
graphDisplayPanel.add(chart);
}
另外，不确定这是否会有所帮助，但这是我所指的界面部分的屏幕转储。白色面板是我希望图表显示的地方，JComboBox 包含许多选项，用于（创建）然后显示的图表，并且按钮是不言自明的......
至于发布 SSCCE - 我不确定是否包括整个图表类。由于我是 JFreeChart 的新手，我认为有人可能需要分析整个课程——因为它的结构可能也是一个问题。如果你想运行这个项目，你可以从这里的 GitHub 克隆它 - https://github.com/rattfieldnz/Java_Projects/tree/master/PCricketStats。
